I used T-100 by SAN and gained about 20 pounds in about 6 weeks. Strength went way up too. I have used other 1AD products, this one actually worked. I took 2 in the morning, one before workout, and one at night on days I lifted. On off days I just took 1 in the morning and one at night. I'm telling you this stuff will work, of course you need to eat too. I know I sound like a fucking commercial, but it really is a quality product. Not as good as gear I am sure, but it did produce substantial gains. Good luck bro!